./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/dll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 211ff4d6a654e925d7b0753c61a65231458a0bc5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 211ff4d6a654e925d7b0753c61a65231458a0bc5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:18:24,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:18:24,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:18:25,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:18:25,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:18:25,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:18:25,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:18:25,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:18:25,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:18:25,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:18:25,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:18:25,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:18:25,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:18:25,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:18:25,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:18:25,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:18:25,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:18:25,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:18:25,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:18:25,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:18:25,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:18:25,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:18:25,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:18:25,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:18:25,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:18:25,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:18:25,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:18:25,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:18:25,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:18:25,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:18:25,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:18:25,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:18:25,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:18:25,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:18:25,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:18:25,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:18:25,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:18:25,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:18:25,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:18:25,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:18:25,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:18:25,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-20 06:18:25,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:18:25,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:18:25,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:18:25,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:18:25,151 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:18:25,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:18:25,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:18:25,152 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:18:25,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:18:25,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:18:25,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:18:25,152 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:18:25,153 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:18:25,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:18:25,153 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:18:25,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:18:25,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:18:25,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:18:25,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:18:25,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:18:25,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:18:25,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:18:25,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:18:25,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:18:25,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:18:25,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:18:25,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:18:25,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211ff4d6a654e925d7b0753c61a65231458a0bc5 [2020-10-20 06:18:25,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:18:25,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:18:25,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:18:25,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:18:25,364 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:18:25,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-10-20 06:18:25,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba7c90e5/d16c17a75da1494ea10d393774eae72c/FLAG39d9d0bbf [2020-10-20 06:18:25,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:18:25,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-10-20 06:18:25,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba7c90e5/d16c17a75da1494ea10d393774eae72c/FLAG39d9d0bbf [2020-10-20 06:18:25,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba7c90e5/d16c17a75da1494ea10d393774eae72c [2020-10-20 06:18:25,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:18:25,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:18:25,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:18:25,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:18:25,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:18:25,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:18:25" (1/1) ... [2020-10-20 06:18:25,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc2a812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:25, skipping insertion in model container [2020-10-20 06:18:25,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:18:25" (1/1) ... [2020-10-20 06:18:25,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:18:25,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:18:26,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:18:26,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:18:26,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:18:26,593 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:18:26,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26 WrapperNode [2020-10-20 06:18:26,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:18:26,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:18:26,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:18:26,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:18:26,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... [2020-10-20 06:18:26,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... [2020-10-20 06:18:26,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... [2020-10-20 06:18:26,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... [2020-10-20 06:18:26,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... [2020-10-20 06:18:26,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... [2020-10-20 06:18:26,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... [2020-10-20 06:18:26,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:18:26,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:18:26,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:18:26,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:18:26,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:18:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:18:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:18:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:18:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:18:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:18:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:18:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:18:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:18:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:18:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:18:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:18:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:18:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:18:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:18:26,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:18:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:18:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:18:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:18:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:18:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:18:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:18:26,741 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:18:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:18:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:18:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:18:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:18:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:18:26,742 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:18:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:18:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:18:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:18:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:18:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:18:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:18:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:18:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:18:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:18:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:18:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:18:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:18:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:18:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:18:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:18:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:18:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:18:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:18:26,745 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:18:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:18:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:18:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:18:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:18:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:18:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:18:26,746 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:18:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:18:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:18:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:18:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:18:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:18:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:18:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:18:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:18:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:18:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:18:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:18:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:18:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:18:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:18:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:18:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:18:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:18:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:18:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:18:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:18:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:18:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:18:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:18:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:18:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:18:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:18:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:18:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:18:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:18:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:18:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:18:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:18:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:18:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:18:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:18:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:18:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:18:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:18:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:18:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:18:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:18:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:18:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:18:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:18:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:18:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:18:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:18:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:18:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:18:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:18:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:18:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:18:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:18:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:18:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:18:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:18:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:18:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:18:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:18:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:18:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:18:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:18:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:18:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:18:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:18:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:18:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:18:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:18:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:18:27,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:18:27,671 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-20 06:18:27,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:27 BoogieIcfgContainer [2020-10-20 06:18:27,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:18:27,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:18:27,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:18:27,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:18:27,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:18:25" (1/3) ... [2020-10-20 06:18:27,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d34bf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:27, skipping insertion in model container [2020-10-20 06:18:27,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:26" (2/3) ... [2020-10-20 06:18:27,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d34bf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:27, skipping insertion in model container [2020-10-20 06:18:27,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:27" (3/3) ... [2020-10-20 06:18:27,701 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2020-10-20 06:18:27,718 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:18:27,732 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2020-10-20 06:18:27,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2020-10-20 06:18:27,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:18:27,783 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:18:27,783 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:18:27,783 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:18:27,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:18:27,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:18:27,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:18:27,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:18:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-10-20 06:18:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:18:27,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:27,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:27,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1613166658, now seen corresponding path program 1 times [2020-10-20 06:18:27,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:27,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230139735] [2020-10-20 06:18:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:28,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230139735] [2020-10-20 06:18:28,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:28,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:28,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055285330] [2020-10-20 06:18:28,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:28,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:28,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:28,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:28,287 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 4 states. [2020-10-20 06:18:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:28,898 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2020-10-20 06:18:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:28,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:18:28,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:28,917 INFO L225 Difference]: With dead ends: 170 [2020-10-20 06:18:28,917 INFO L226 Difference]: Without dead ends: 166 [2020-10-20 06:18:28,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-20 06:18:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-20 06:18:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-20 06:18:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2020-10-20 06:18:28,991 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 7 [2020-10-20 06:18:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:28,992 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2020-10-20 06:18:28,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2020-10-20 06:18:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:18:28,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:28,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:28,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:18:28,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:28,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1613166657, now seen corresponding path program 1 times [2020-10-20 06:18:28,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:28,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639996082] [2020-10-20 06:18:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:29,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639996082] [2020-10-20 06:18:29,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:29,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:29,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600398230] [2020-10-20 06:18:29,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:29,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:29,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:29,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:29,119 INFO L87 Difference]: Start difference. First operand 162 states and 187 transitions. Second operand 4 states. [2020-10-20 06:18:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:29,688 INFO L93 Difference]: Finished difference Result 155 states and 178 transitions. [2020-10-20 06:18:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:29,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:18:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:29,692 INFO L225 Difference]: With dead ends: 155 [2020-10-20 06:18:29,692 INFO L226 Difference]: Without dead ends: 155 [2020-10-20 06:18:29,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:29,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-20 06:18:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2020-10-20 06:18:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-20 06:18:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2020-10-20 06:18:29,709 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 7 [2020-10-20 06:18:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:29,709 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2020-10-20 06:18:29,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2020-10-20 06:18:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:18:29,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:29,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:29,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:18:29,712 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:29,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:29,713 INFO L82 PathProgramCache]: Analyzing trace with hash 223465383, now seen corresponding path program 1 times [2020-10-20 06:18:29,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:29,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937032592] [2020-10-20 06:18:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:29,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937032592] [2020-10-20 06:18:29,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:29,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:29,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305886000] [2020-10-20 06:18:29,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:18:29,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:29,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:18:29,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:18:29,963 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand 5 states. [2020-10-20 06:18:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:30,415 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2020-10-20 06:18:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:30,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 06:18:30,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:30,419 INFO L225 Difference]: With dead ends: 159 [2020-10-20 06:18:30,419 INFO L226 Difference]: Without dead ends: 159 [2020-10-20 06:18:30,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-20 06:18:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2020-10-20 06:18:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-20 06:18:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-10-20 06:18:30,432 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 13 [2020-10-20 06:18:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:30,432 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-10-20 06:18:30,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:18:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-10-20 06:18:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:18:30,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:30,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:30,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:18:30,437 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash 223465384, now seen corresponding path program 1 times [2020-10-20 06:18:30,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:30,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876306790] [2020-10-20 06:18:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:30,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:30,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876306790] [2020-10-20 06:18:30,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:30,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:18:30,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243189978] [2020-10-20 06:18:30,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:18:30,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:30,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:18:30,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:18:30,594 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 7 states. [2020-10-20 06:18:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:31,326 INFO L93 Difference]: Finished difference Result 236 states and 276 transitions. [2020-10-20 06:18:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:18:31,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 06:18:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:31,331 INFO L225 Difference]: With dead ends: 236 [2020-10-20 06:18:31,331 INFO L226 Difference]: Without dead ends: 236 [2020-10-20 06:18:31,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:18:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-20 06:18:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 159. [2020-10-20 06:18:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 06:18:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-10-20 06:18:31,355 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 13 [2020-10-20 06:18:31,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:31,356 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-10-20 06:18:31,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:18:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-10-20 06:18:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:18:31,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:31,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:31,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:18:31,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:31,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:31,362 INFO L82 PathProgramCache]: Analyzing trace with hash 59034886, now seen corresponding path program 1 times [2020-10-20 06:18:31,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:31,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608463568] [2020-10-20 06:18:31,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:31,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608463568] [2020-10-20 06:18:31,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:31,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:31,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884065241] [2020-10-20 06:18:31,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:31,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:31,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:31,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:31,480 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-10-20 06:18:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:31,784 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2020-10-20 06:18:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:31,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-20 06:18:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:31,787 INFO L225 Difference]: With dead ends: 154 [2020-10-20 06:18:31,787 INFO L226 Difference]: Without dead ends: 154 [2020-10-20 06:18:31,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:31,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-20 06:18:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-20 06:18:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-20 06:18:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-10-20 06:18:31,796 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 16 [2020-10-20 06:18:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:31,796 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-10-20 06:18:31,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-10-20 06:18:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:18:31,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:31,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:31,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:18:31,798 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:31,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1868426, now seen corresponding path program 1 times [2020-10-20 06:18:31,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:31,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054549036] [2020-10-20 06:18:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:31,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054549036] [2020-10-20 06:18:31,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:31,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:18:31,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883640063] [2020-10-20 06:18:31,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:18:31,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:18:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:31,873 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 6 states. [2020-10-20 06:18:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:32,538 INFO L93 Difference]: Finished difference Result 241 states and 280 transitions. [2020-10-20 06:18:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:32,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 06:18:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:32,540 INFO L225 Difference]: With dead ends: 241 [2020-10-20 06:18:32,541 INFO L226 Difference]: Without dead ends: 241 [2020-10-20 06:18:32,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:18:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-20 06:18:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 153. [2020-10-20 06:18:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-20 06:18:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 176 transitions. [2020-10-20 06:18:32,561 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 176 transitions. Word has length 15 [2020-10-20 06:18:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:32,563 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 176 transitions. [2020-10-20 06:18:32,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:18:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 176 transitions. [2020-10-20 06:18:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:18:32,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:32,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:32,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:18:32,565 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:32,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1868427, now seen corresponding path program 1 times [2020-10-20 06:18:32,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:32,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664379060] [2020-10-20 06:18:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:32,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:32,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664379060] [2020-10-20 06:18:32,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:32,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:18:32,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248504715] [2020-10-20 06:18:32,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:18:32,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:32,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:18:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:32,683 INFO L87 Difference]: Start difference. First operand 153 states and 176 transitions. Second operand 6 states. [2020-10-20 06:18:33,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:33,410 INFO L93 Difference]: Finished difference Result 253 states and 292 transitions. [2020-10-20 06:18:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:18:33,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 06:18:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:33,413 INFO L225 Difference]: With dead ends: 253 [2020-10-20 06:18:33,413 INFO L226 Difference]: Without dead ends: 253 [2020-10-20 06:18:33,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-20 06:18:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 152. [2020-10-20 06:18:33,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-20 06:18:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2020-10-20 06:18:33,422 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 15 [2020-10-20 06:18:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:33,422 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2020-10-20 06:18:33,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:18:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2020-10-20 06:18:33,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:18:33,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:33,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:33,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:18:33,425 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:33,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:33,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1045865331, now seen corresponding path program 1 times [2020-10-20 06:18:33,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:33,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811349118] [2020-10-20 06:18:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:33,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:33,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811349118] [2020-10-20 06:18:33,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:33,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:18:33,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410284892] [2020-10-20 06:18:33,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:18:33,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:33,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:18:33,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:18:33,615 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand 11 states. [2020-10-20 06:18:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:34,959 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2020-10-20 06:18:34,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:18:34,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-10-20 06:18:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:34,962 INFO L225 Difference]: With dead ends: 211 [2020-10-20 06:18:34,962 INFO L226 Difference]: Without dead ends: 211 [2020-10-20 06:18:34,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:18:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-20 06:18:34,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 138. [2020-10-20 06:18:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-20 06:18:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2020-10-20 06:18:34,969 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 19 [2020-10-20 06:18:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:34,969 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2020-10-20 06:18:34,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:18:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2020-10-20 06:18:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:18:34,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:34,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:34,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:18:34,971 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1045865332, now seen corresponding path program 1 times [2020-10-20 06:18:34,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:34,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303319123] [2020-10-20 06:18:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:35,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303319123] [2020-10-20 06:18:35,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:35,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:35,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092962635] [2020-10-20 06:18:35,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:35,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:35,089 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 10 states. [2020-10-20 06:18:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:35,757 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-10-20 06:18:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:18:35,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-20 06:18:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:35,760 INFO L225 Difference]: With dead ends: 140 [2020-10-20 06:18:35,760 INFO L226 Difference]: Without dead ends: 140 [2020-10-20 06:18:35,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:18:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-20 06:18:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2020-10-20 06:18:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-20 06:18:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2020-10-20 06:18:35,767 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 19 [2020-10-20 06:18:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:35,767 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2020-10-20 06:18:35,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2020-10-20 06:18:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:18:35,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:35,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:35,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:18:35,776 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:35,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1641435286, now seen corresponding path program 1 times [2020-10-20 06:18:35,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:35,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935333997] [2020-10-20 06:18:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:35,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935333997] [2020-10-20 06:18:35,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:35,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:35,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822389540] [2020-10-20 06:18:35,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:35,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:35,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:35,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:35,841 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand 4 states. [2020-10-20 06:18:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:36,087 INFO L93 Difference]: Finished difference Result 193 states and 222 transitions. [2020-10-20 06:18:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:36,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-20 06:18:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:36,090 INFO L225 Difference]: With dead ends: 193 [2020-10-20 06:18:36,090 INFO L226 Difference]: Without dead ends: 193 [2020-10-20 06:18:36,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-20 06:18:36,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 152. [2020-10-20 06:18:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-20 06:18:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2020-10-20 06:18:36,099 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 22 [2020-10-20 06:18:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:36,099 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2020-10-20 06:18:36,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2020-10-20 06:18:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:18:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:36,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:36,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:18:36,102 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:36,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2102877847, now seen corresponding path program 1 times [2020-10-20 06:18:36,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:36,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373408766] [2020-10-20 06:18:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:36,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:36,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373408766] [2020-10-20 06:18:36,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:36,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:18:36,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026234884] [2020-10-20 06:18:36,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:18:36,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:36,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:18:36,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:18:36,160 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand 5 states. [2020-10-20 06:18:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:36,420 INFO L93 Difference]: Finished difference Result 185 states and 209 transitions. [2020-10-20 06:18:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:36,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 06:18:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:36,424 INFO L225 Difference]: With dead ends: 185 [2020-10-20 06:18:36,425 INFO L226 Difference]: Without dead ends: 185 [2020-10-20 06:18:36,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-20 06:18:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 163. [2020-10-20 06:18:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-20 06:18:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 188 transitions. [2020-10-20 06:18:36,432 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 188 transitions. Word has length 25 [2020-10-20 06:18:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:36,432 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 188 transitions. [2020-10-20 06:18:36,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:18:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 188 transitions. [2020-10-20 06:18:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:18:36,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:36,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:36,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:18:36,434 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:36,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2083181021, now seen corresponding path program 1 times [2020-10-20 06:18:36,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:36,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177107797] [2020-10-20 06:18:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:36,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177107797] [2020-10-20 06:18:36,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:36,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:18:36,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999461468] [2020-10-20 06:18:36,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:18:36,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:36,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:18:36,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:18:36,556 INFO L87 Difference]: Start difference. First operand 163 states and 188 transitions. Second operand 7 states. [2020-10-20 06:18:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:36,968 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2020-10-20 06:18:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:18:36,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-20 06:18:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:36,970 INFO L225 Difference]: With dead ends: 161 [2020-10-20 06:18:36,970 INFO L226 Difference]: Without dead ends: 161 [2020-10-20 06:18:36,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-20 06:18:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2020-10-20 06:18:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 06:18:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2020-10-20 06:18:36,977 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 27 [2020-10-20 06:18:36,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:36,977 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2020-10-20 06:18:36,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:18:36,977 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2020-10-20 06:18:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:18:36,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:36,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:36,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:18:36,983 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:36,984 INFO L82 PathProgramCache]: Analyzing trace with hash -308173659, now seen corresponding path program 1 times [2020-10-20 06:18:36,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:36,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349749847] [2020-10-20 06:18:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:37,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349749847] [2020-10-20 06:18:37,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:37,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:37,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44604515] [2020-10-20 06:18:37,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:18:37,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:37,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:18:37,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:18:37,047 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand 5 states. [2020-10-20 06:18:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:37,353 INFO L93 Difference]: Finished difference Result 157 states and 177 transitions. [2020-10-20 06:18:37,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:37,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-20 06:18:37,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:37,355 INFO L225 Difference]: With dead ends: 157 [2020-10-20 06:18:37,355 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 06:18:37,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 06:18:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-20 06:18:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 06:18:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 177 transitions. [2020-10-20 06:18:37,361 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 177 transitions. Word has length 27 [2020-10-20 06:18:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:37,364 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 177 transitions. [2020-10-20 06:18:37,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:18:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 177 transitions. [2020-10-20 06:18:37,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:18:37,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:37,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:37,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 06:18:37,370 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:37,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1409695665, now seen corresponding path program 1 times [2020-10-20 06:18:37,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:37,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356071334] [2020-10-20 06:18:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:37,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356071334] [2020-10-20 06:18:37,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:37,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 06:18:37,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027592340] [2020-10-20 06:18:37,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:18:37,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:37,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:18:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:18:37,585 INFO L87 Difference]: Start difference. First operand 157 states and 177 transitions. Second operand 11 states. [2020-10-20 06:18:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:38,388 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2020-10-20 06:18:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 06:18:38,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-20 06:18:38,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:38,389 INFO L225 Difference]: With dead ends: 157 [2020-10-20 06:18:38,390 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 06:18:38,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:18:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 06:18:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-10-20 06:18:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-20 06:18:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 175 transitions. [2020-10-20 06:18:38,395 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 175 transitions. Word has length 28 [2020-10-20 06:18:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:38,396 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 175 transitions. [2020-10-20 06:18:38,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:18:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 175 transitions. [2020-10-20 06:18:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:18:38,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:38,397 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:38,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:18:38,397 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:38,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:38,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1839066993, now seen corresponding path program 1 times [2020-10-20 06:18:38,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:38,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313496241] [2020-10-20 06:18:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:38,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313496241] [2020-10-20 06:18:38,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135289337] [2020-10-20 06:18:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:18:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:38,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 06:18:38,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:18:38,760 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:18:38,761 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:38,774 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:18:38,775 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:38,791 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,791 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-10-20 06:18:38,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,829 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-20 06:18:38,832 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:38,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,855 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-20 06:18:38,856 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,866 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:38,866 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,867 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2020-10-20 06:18:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,916 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:18:38,918 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:38,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,942 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:18:38,944 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,952 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:38,953 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:38,953 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:33 [2020-10-20 06:18:38,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:38,999 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-20 06:18:39,002 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:39,009 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:39,026 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-20 06:18:39,027 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-10-20 06:18:39,030 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:39,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:39,035 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:39,035 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-10-20 06:18:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:39,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:18:39,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2020-10-20 06:18:39,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795305033] [2020-10-20 06:18:39,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:39,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:39,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:39,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:39,051 INFO L87 Difference]: Start difference. First operand 156 states and 175 transitions. Second operand 10 states. [2020-10-20 06:18:39,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:39,644 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2020-10-20 06:18:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:18:39,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-20 06:18:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:39,650 INFO L225 Difference]: With dead ends: 188 [2020-10-20 06:18:39,650 INFO L226 Difference]: Without dead ends: 188 [2020-10-20 06:18:39,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:18:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-20 06:18:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 166. [2020-10-20 06:18:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-20 06:18:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 186 transitions. [2020-10-20 06:18:39,664 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 186 transitions. Word has length 30 [2020-10-20 06:18:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:39,664 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 186 transitions. [2020-10-20 06:18:39,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 186 transitions. [2020-10-20 06:18:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:18:39,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:39,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:39,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:18:39,868 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:39,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1176500828, now seen corresponding path program 1 times [2020-10-20 06:18:39,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:39,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571906960] [2020-10-20 06:18:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:40,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571906960] [2020-10-20 06:18:40,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106040198] [2020-10-20 06:18:40,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:18:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:40,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 06:18:40,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:18:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:40,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:18:40,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-10-20 06:18:40,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221984369] [2020-10-20 06:18:40,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:40,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:40,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:40,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:40,216 INFO L87 Difference]: Start difference. First operand 166 states and 186 transitions. Second operand 10 states. [2020-10-20 06:18:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:40,519 INFO L93 Difference]: Finished difference Result 176 states and 195 transitions. [2020-10-20 06:18:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:18:40,519 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-20 06:18:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:40,521 INFO L225 Difference]: With dead ends: 176 [2020-10-20 06:18:40,521 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 06:18:40,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:18:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 06:18:40,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-20 06:18:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 06:18:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 176 transitions. [2020-10-20 06:18:40,534 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 176 transitions. Word has length 31 [2020-10-20 06:18:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:40,534 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 176 transitions. [2020-10-20 06:18:40,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 176 transitions. [2020-10-20 06:18:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:18:40,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:40,537 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:40,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 06:18:40,738 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:40,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1025327020, now seen corresponding path program 1 times [2020-10-20 06:18:40,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:40,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072531378] [2020-10-20 06:18:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:40,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072531378] [2020-10-20 06:18:40,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362322529] [2020-10-20 06:18:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:18:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:41,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-20 06:18:41,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:18:41,101 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:18:41,101 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,105 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:18:41,194 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,195 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 06:18:41,196 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,207 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,208 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2020-10-20 06:18:41,256 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:18:41,257 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,276 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,280 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:18:41,280 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,297 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,297 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:42, output treesize:28 [2020-10-20 06:18:41,414 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,415 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 65 [2020-10-20 06:18:41,420 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 06:18:41,420 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 06:18:41,422 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 06:18:41,469 INFO L625 ElimStorePlain]: treesize reduction 48, result has 56.4 percent of original size [2020-10-20 06:18:41,475 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-20 06:18:41,476 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,498 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:41,499 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:54 [2020-10-20 06:18:41,584 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-10-20 06:18:41,589 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,604 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,606 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:41,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:38 [2020-10-20 06:18:41,742 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:41,779 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,780 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 97 [2020-10-20 06:18:41,782 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,836 INFO L625 ElimStorePlain]: treesize reduction 32, result has 59.0 percent of original size [2020-10-20 06:18:41,839 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,839 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:31 [2020-10-20 06:18:41,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:41,910 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-10-20 06:18:41,912 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:41,926 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:41,926 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:31 [2020-10-20 06:18:41,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:42,122 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:42,126 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:42,126 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2020-10-20 06:18:42,128 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:42,149 INFO L625 ElimStorePlain]: treesize reduction 4, result has 84.0 percent of original size [2020-10-20 06:18:42,153 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:42,153 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:4 [2020-10-20 06:18:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:42,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:18:42,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2020-10-20 06:18:42,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007396404] [2020-10-20 06:18:42,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 06:18:42,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:42,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 06:18:42,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-20 06:18:42,166 INFO L87 Difference]: Start difference. First operand 157 states and 176 transitions. Second operand 24 states. [2020-10-20 06:18:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:44,388 INFO L93 Difference]: Finished difference Result 262 states and 297 transitions. [2020-10-20 06:18:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 06:18:44,389 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 38 [2020-10-20 06:18:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:44,391 INFO L225 Difference]: With dead ends: 262 [2020-10-20 06:18:44,391 INFO L226 Difference]: Without dead ends: 262 [2020-10-20 06:18:44,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2020-10-20 06:18:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-20 06:18:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 172. [2020-10-20 06:18:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-20 06:18:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2020-10-20 06:18:44,401 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 38 [2020-10-20 06:18:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:44,402 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2020-10-20 06:18:44,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 06:18:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2020-10-20 06:18:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-20 06:18:44,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:44,404 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:44,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:18:44,617 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash 350542885, now seen corresponding path program 1 times [2020-10-20 06:18:44,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:44,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783816887] [2020-10-20 06:18:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:44,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:44,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783816887] [2020-10-20 06:18:44,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:44,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:44,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531966630] [2020-10-20 06:18:44,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:44,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:44,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:44,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:44,675 INFO L87 Difference]: Start difference. First operand 172 states and 193 transitions. Second operand 4 states. [2020-10-20 06:18:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:44,936 INFO L93 Difference]: Finished difference Result 244 states and 271 transitions. [2020-10-20 06:18:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:44,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-20 06:18:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:44,939 INFO L225 Difference]: With dead ends: 244 [2020-10-20 06:18:44,939 INFO L226 Difference]: Without dead ends: 244 [2020-10-20 06:18:44,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-20 06:18:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 192. [2020-10-20 06:18:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-20 06:18:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2020-10-20 06:18:44,946 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 39 [2020-10-20 06:18:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:44,947 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2020-10-20 06:18:44,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2020-10-20 06:18:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 06:18:44,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:44,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:44,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-20 06:18:44,949 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1771416021, now seen corresponding path program 1 times [2020-10-20 06:18:44,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:44,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670994489] [2020-10-20 06:18:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:45,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670994489] [2020-10-20 06:18:45,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270415293] [2020-10-20 06:18:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:18:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:45,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-20 06:18:45,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:18:45,362 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:18:45,362 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:45,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:45,368 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:45,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:18:45,475 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:45,476 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-20 06:18:45,480 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:45,511 INFO L625 ElimStorePlain]: treesize reduction 14, result has 65.9 percent of original size [2020-10-20 06:18:45,511 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:45,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2020-10-20 06:18:45,554 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:18:45,554 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:45,569 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:45,570 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:45,571 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2020-10-20 06:18:45,679 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:45,680 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 57 [2020-10-20 06:18:45,683 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 06:18:45,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 06:18:45,686 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 06:18:45,739 INFO L625 ElimStorePlain]: treesize reduction 40, result has 54.5 percent of original size [2020-10-20 06:18:45,740 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:45,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:48 [2020-10-20 06:18:45,952 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:45,953 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 110 [2020-10-20 06:18:45,955 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:46,009 INFO L625 ElimStorePlain]: treesize reduction 40, result has 55.6 percent of original size [2020-10-20 06:18:46,011 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:46,011 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:60, output treesize:35 [2020-10-20 06:18:46,113 INFO L350 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2020-10-20 06:18:46,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2020-10-20 06:18:46,116 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 06:18:46,117 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 06:18:46,118 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:46,145 INFO L625 ElimStorePlain]: treesize reduction 32, result has 55.6 percent of original size [2020-10-20 06:18:46,146 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:46,146 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:40 [2020-10-20 06:18:46,281 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:46,281 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2020-10-20 06:18:46,282 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:46,302 INFO L625 ElimStorePlain]: treesize reduction 12, result has 63.6 percent of original size [2020-10-20 06:18:46,304 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:46,304 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:15 [2020-10-20 06:18:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:46,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:18:46,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2020-10-20 06:18:46,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443108590] [2020-10-20 06:18:46,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-20 06:18:46,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:46,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-20 06:18:46,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=646, Unknown=0, NotChecked=0, Total=812 [2020-10-20 06:18:46,414 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand 29 states. [2020-10-20 06:18:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:48,236 INFO L93 Difference]: Finished difference Result 250 states and 278 transitions. [2020-10-20 06:18:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-20 06:18:48,237 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 46 [2020-10-20 06:18:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:48,239 INFO L225 Difference]: With dead ends: 250 [2020-10-20 06:18:48,239 INFO L226 Difference]: Without dead ends: 250 [2020-10-20 06:18:48,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=587, Invalid=1863, Unknown=0, NotChecked=0, Total=2450 [2020-10-20 06:18:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-20 06:18:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 204. [2020-10-20 06:18:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-20 06:18:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 229 transitions. [2020-10-20 06:18:48,246 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 229 transitions. Word has length 46 [2020-10-20 06:18:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:48,247 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 229 transitions. [2020-10-20 06:18:48,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-20 06:18:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 229 transitions. [2020-10-20 06:18:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 06:18:48,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:48,248 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:48,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:18:48,462 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:18:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1771416022, now seen corresponding path program 1 times [2020-10-20 06:18:48,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:48,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58028887] [2020-10-20 06:18:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:48,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:48,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58028887] [2020-10-20 06:18:48,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132211440] [2020-10-20 06:18:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:18:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:48,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 44 conjunts are in the unsatisfiable core [2020-10-20 06:18:48,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:18:48,966 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:18:48,966 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:48,970 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:48,970 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:48,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:18:49,051 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_70|], 1=[|v_#valid_83|]} [2020-10-20 06:18:49,054 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:18:49,054 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,069 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,078 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,078 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 06:18:49,079 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,091 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,092 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:25 [2020-10-20 06:18:49,136 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:18:49,137 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,157 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:18:49,158 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,176 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:37 [2020-10-20 06:18:49,290 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,291 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 70 [2020-10-20 06:18:49,294 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-10-20 06:18:49,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 06:18:49,296 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 06:18:49,351 INFO L625 ElimStorePlain]: treesize reduction 53, result has 57.3 percent of original size [2020-10-20 06:18:49,356 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-20 06:18:49,356 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,391 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:49,392 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:79, output treesize:63 [2020-10-20 06:18:49,585 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:49,625 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,626 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 108 [2020-10-20 06:18:49,628 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 06:18:49,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 06:18:49,631 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-10-20 06:18:49,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 06:18:49,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 06:18:49,635 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-10-20 06:18:49,641 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:49,734 INFO L625 ElimStorePlain]: treesize reduction 32, result has 73.8 percent of original size [2020-10-20 06:18:49,778 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:49,779 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 87 [2020-10-20 06:18:49,780 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:49,875 INFO L625 ElimStorePlain]: treesize reduction 54, result has 60.3 percent of original size [2020-10-20 06:18:49,877 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,881 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:49,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,891 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 06:18:49,891 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:89, output treesize:82 [2020-10-20 06:18:49,892 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,893 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:49,894 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,983 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,984 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:49,985 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:49,987 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,057 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,058 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,059 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,064 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,067 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,074 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,088 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,090 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,094 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,096 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,098 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,103 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,111 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,117 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,118 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,122 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,126 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,128 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,134 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,136 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,138 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,148 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,151 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,159 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,163 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,165 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,175 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,176 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,181 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,182 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,188 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,193 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,198 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,200 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,207 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,208 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,209 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,212 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,213 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,216 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,219 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,223 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,224 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,226 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,227 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,230 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 06:18:50,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:50,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,277 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:50,282 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:50,283 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 92 [2020-10-20 06:18:50,285 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:50,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,317 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:18:50,318 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:50,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,345 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:50,408 INFO L350 Elim1Store]: treesize reduction 28, result has 67.4 percent of original size [2020-10-20 06:18:50,409 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 99 [2020-10-20 06:18:50,411 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:50,792 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-20 06:18:50,793 INFO L625 ElimStorePlain]: treesize reduction 66, result has 81.1 percent of original size [2020-10-20 06:18:50,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,811 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:18:50,812 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:50,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,831 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 27 [2020-10-20 06:18:50,832 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:50,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:18:50,861 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:50,908 INFO L350 Elim1Store]: treesize reduction 36, result has 60.9 percent of original size [2020-10-20 06:18:50,909 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 79 [2020-10-20 06:18:50,910 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:51,097 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-20 06:18:51,098 INFO L625 ElimStorePlain]: treesize reduction 34, result has 87.2 percent of original size [2020-10-20 06:18:51,101 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:51,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:51,104 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2020-10-20 06:18:51,104 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 6 variables, input treesize:357, output treesize:231 [2020-10-20 06:18:51,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:51,108 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:51,317 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:51,317 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,529 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,620 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:52,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,110 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:53,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,156 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,275 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:55,377 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:56,978 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 81 [2020-10-20 06:18:56,981 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 9, 1] term [2020-10-20 06:18:56,981 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 06:18:57,246 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-10-20 06:18:57,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:18:57,290 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:57,309 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:57,310 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 71 [2020-10-20 06:18:57,311 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:57,318 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:18:57,333 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:57,333 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2020-10-20 06:18:57,334 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:57,471 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-20 06:18:57,472 INFO L625 ElimStorePlain]: treesize reduction 8, result has 93.9 percent of original size [2020-10-20 06:18:57,479 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-20 06:18:57,480 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:57,494 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:18:57,494 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2020-10-20 06:18:57,495 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-20 06:18:57,590 INFO L625 ElimStorePlain]: treesize reduction 14, result has 84.6 percent of original size [2020-10-20 06:18:57,596 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:18:57,596 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:177, output treesize:13 [2020-10-20 06:18:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:57,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:18:57,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2020-10-20 06:18:57,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226418777] [2020-10-20 06:18:57,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-20 06:18:57,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:57,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-20 06:18:57,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2020-10-20 06:18:57,706 INFO L87 Difference]: Start difference. First operand 204 states and 229 transitions. Second operand 31 states. [2020-10-20 06:19:00,684 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-20 06:19:02,198 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2020-10-20 06:19:02,559 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2020-10-20 06:19:02,748 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-20 06:19:02,960 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-20 06:19:03,250 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-20 06:19:03,703 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-20 06:19:03,945 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-20 06:19:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:04,566 INFO L93 Difference]: Finished difference Result 241 states and 271 transitions. [2020-10-20 06:19:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-20 06:19:04,566 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 46 [2020-10-20 06:19:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:04,568 INFO L225 Difference]: With dead ends: 241 [2020-10-20 06:19:04,568 INFO L226 Difference]: Without dead ends: 241 [2020-10-20 06:19:04,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 21 SyntacticMatches, 13 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=423, Invalid=2333, Unknown=0, NotChecked=0, Total=2756 [2020-10-20 06:19:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-20 06:19:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 208. [2020-10-20 06:19:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-20 06:19:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 233 transitions. [2020-10-20 06:19:04,583 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 233 transitions. Word has length 46 [2020-10-20 06:19:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:04,584 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 233 transitions. [2020-10-20 06:19:04,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-20 06:19:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 233 transitions. [2020-10-20 06:19:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 06:19:04,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:04,585 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:04,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:19:04,798 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:04,799 INFO L82 PathProgramCache]: Analyzing trace with hash 785939138, now seen corresponding path program 1 times [2020-10-20 06:19:04,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:04,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012676707] [2020-10-20 06:19:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:05,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012676707] [2020-10-20 06:19:05,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233411287] [2020-10-20 06:19:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:19:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:05,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 45 conjunts are in the unsatisfiable core [2020-10-20 06:19:05,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:05,396 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:05,397 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,401 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,401 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,402 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:05,443 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,444 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 06:19:05,444 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,452 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,453 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:17 [2020-10-20 06:19:05,463 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:05,464 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,474 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,477 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:05,478 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,487 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,488 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,488 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:25 [2020-10-20 06:19:05,557 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,558 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 65 [2020-10-20 06:19:05,560 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 06:19:05,560 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 06:19:05,560 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,574 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,578 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-20 06:19:05,578 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,591 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,592 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:05,592 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:67, output treesize:51 [2020-10-20 06:19:05,787 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,787 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 63 [2020-10-20 06:19:05,788 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,844 INFO L625 ElimStorePlain]: treesize reduction 26, result has 75.5 percent of original size [2020-10-20 06:19:05,850 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:19:05,886 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:05,887 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 106 [2020-10-20 06:19:05,888 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:05,950 INFO L625 ElimStorePlain]: treesize reduction 32, result has 68.6 percent of original size [2020-10-20 06:19:05,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:19:05,952 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:05,952 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:84, output treesize:70 [2020-10-20 06:19:05,953 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:19:06,054 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_24|], 6=[|v_#memory_$Pointer$.offset_51|, |v_#memory_$Pointer$.base_57|]} [2020-10-20 06:19:06,059 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2020-10-20 06:19:06,060 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:06,089 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:06,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:19:06,094 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 28 [2020-10-20 06:19:06,094 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:06,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:06,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:19:06,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:19:06,129 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:19:06,132 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:06,133 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 64 [2020-10-20 06:19:06,133 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:06,169 INFO L625 ElimStorePlain]: treesize reduction 24, result has 71.4 percent of original size [2020-10-20 06:19:06,170 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:06,171 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:134, output treesize:60 [2020-10-20 06:19:06,285 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:19:06,289 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:06,289 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2020-10-20 06:19:06,290 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:06,315 INFO L625 ElimStorePlain]: treesize reduction 8, result has 83.7 percent of original size [2020-10-20 06:19:06,318 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 06:19:06,319 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:06,327 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:06,329 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:06,329 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:71, output treesize:19 [2020-10-20 06:19:06,440 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 06:19:06,442 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:06,443 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-10-20 06:19:06,443 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:06,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:06,453 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:06,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-10-20 06:19:06,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:19:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:06,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:19:06,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 29 [2020-10-20 06:19:06,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681358577] [2020-10-20 06:19:06,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-20 06:19:06,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:06,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-20 06:19:06,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-20 06:19:06,521 INFO L87 Difference]: Start difference. First operand 208 states and 233 transitions. Second operand 29 states. [2020-10-20 06:19:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:09,234 INFO L93 Difference]: Finished difference Result 253 states and 283 transitions. [2020-10-20 06:19:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-20 06:19:09,235 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 51 [2020-10-20 06:19:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:09,236 INFO L225 Difference]: With dead ends: 253 [2020-10-20 06:19:09,236 INFO L226 Difference]: Without dead ends: 253 [2020-10-20 06:19:09,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=426, Invalid=2544, Unknown=0, NotChecked=0, Total=2970 [2020-10-20 06:19:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-20 06:19:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 207. [2020-10-20 06:19:09,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-20 06:19:09,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 231 transitions. [2020-10-20 06:19:09,242 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 231 transitions. Word has length 51 [2020-10-20 06:19:09,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:09,243 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 231 transitions. [2020-10-20 06:19:09,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-20 06:19:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 231 transitions. [2020-10-20 06:19:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 06:19:09,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:09,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:09,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:19:09,454 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:09,455 INFO L82 PathProgramCache]: Analyzing trace with hash -187688779, now seen corresponding path program 1 times [2020-10-20 06:19:09,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:09,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730680355] [2020-10-20 06:19:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:09,489 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-10-20 06:19:09,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-20 06:19:09,500 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 06:19:09,506 INFO L168 Benchmark]: Toolchain (without parser) took 43572.43 ms. Allocated memory was 38.3 MB in the beginning and 153.1 MB in the end (delta: 114.8 MB). Free memory was 19.6 MB in the beginning and 28.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 105.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:09,507 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 35.1 MB. Free memory was 12.0 MB in the beginning and 11.9 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:19:09,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.35 ms. Allocated memory was 38.3 MB in the beginning and 48.2 MB in the end (delta: 10.0 MB). Free memory was 18.8 MB in the beginning and 30.8 MB in the end (delta: -12.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:09,507 INFO L168 Benchmark]: Boogie Preprocessor took 71.86 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 27.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:09,508 INFO L168 Benchmark]: RCFGBuilder took 1001.11 ms. Allocated memory was 48.2 MB in the beginning and 51.9 MB in the end (delta: 3.7 MB). Free memory was 27.1 MB in the beginning and 15.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:09,508 INFO L168 Benchmark]: TraceAbstraction took 41823.15 ms. Allocated memory was 51.9 MB in the beginning and 153.1 MB in the end (delta: 101.2 MB). Free memory was 15.1 MB in the beginning and 28.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 87.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:09,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 35.1 MB. Free memory was 12.0 MB in the beginning and 11.9 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 661.35 ms. Allocated memory was 38.3 MB in the beginning and 48.2 MB in the end (delta: 10.0 MB). Free memory was 18.8 MB in the beginning and 30.8 MB in the end (delta: -12.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 71.86 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 27.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1001.11 ms. Allocated memory was 48.2 MB in the beginning and 51.9 MB in the end (delta: 3.7 MB). Free memory was 27.1 MB in the beginning and 15.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 41823.15 ms. Allocated memory was 51.9 MB in the beginning and 153.1 MB in the end (delta: 101.2 MB). Free memory was 15.1 MB in the beginning and 28.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 87.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:19:11,728 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 06:19:11,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:19:11,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:19:11,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:19:11,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:19:11,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:19:11,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:19:11,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:19:11,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:19:11,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:19:11,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:19:11,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:19:11,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2020-10-20 06:19:11,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:19:11,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:19:11,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:19:11,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:19:11,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:19:11,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:19:11,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:19:11,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:19:11,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:19:11,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:19:11,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:19:11,895 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:19:11,895 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:19:11,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:19:11,896 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:19:11,896 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:19:11,897 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:19:11,897 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:19:11,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:19:11,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:19:11,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:19:11,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:19:11,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:19:11,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:11,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:19:11,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:19:11,899 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:19:11,899 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:19:11,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:19:11,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:19:11,900 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211ff4d6a654e925d7b0753c61a65231458a0bc5 [2020-10-20 06:19:12,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:19:12,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:19:12,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:19:12,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:19:12,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:19:12,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-10-20 06:19:12,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f09afd4/6fdfaa76381146b1be9ea353a55ca8e4/FLAG3d797011d [2020-10-20 06:19:12,695 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:19:12,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-10-20 06:19:12,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f09afd4/6fdfaa76381146b1be9ea353a55ca8e4/FLAG3d797011d [2020-10-20 06:19:13,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f09afd4/6fdfaa76381146b1be9ea353a55ca8e4 [2020-10-20 06:19:13,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:19:13,061 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:19:13,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:13,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:19:13,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:19:13,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0ab7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13, skipping insertion in model container [2020-10-20 06:19:13,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:19:13,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:19:13,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:13,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:19:13,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:13,788 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:19:13,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13 WrapperNode [2020-10-20 06:19:13,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:13,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:19:13,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:19:13,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:19:13,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... [2020-10-20 06:19:13,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:19:13,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:19:13,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:19:13,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:19:13,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:19:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:19:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:19:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:19:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:19:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:19:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:19:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:19:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:19:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:19:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:19:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:19:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:19:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:19:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:19:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:19:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:19:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:19:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:19:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:19:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:19:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:19:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:19:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:19:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:19:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:19:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:19:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:19:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:19:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:19:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:19:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:19:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:19:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:19:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:19:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:19:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:19:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:19:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:19:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:19:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:19:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:19:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:19:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:19:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:19:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:19:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:19:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:19:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:19:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:19:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:19:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:19:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:19:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:19:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:19:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:19:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:19:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:19:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:19:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:19:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:19:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:19:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:19:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:19:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:19:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:19:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:19:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:19:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:19:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:19:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:19:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:19:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:19:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:19:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:19:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:19:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:19:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:19:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:19:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:19:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:19:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:19:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:19:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:19:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:19:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:19:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:19:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:19:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:19:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:19:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:19:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:19:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:19:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:19:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:19:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:19:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:19:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:19:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:19:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:19:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:19:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:19:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:19:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:19:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:19:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:19:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:19:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:19:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:19:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:19:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:19:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:19:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:19:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:19:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:19:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:19:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:19:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:19:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:19:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:19:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:19:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:19:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:19:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:19:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:19:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:19:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:19:15,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:19:15,109 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-20 06:19:15,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:15 BoogieIcfgContainer [2020-10-20 06:19:15,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:19:15,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:19:15,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:19:15,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:19:15,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:19:13" (1/3) ... [2020-10-20 06:19:15,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c517e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:15, skipping insertion in model container [2020-10-20 06:19:15,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:13" (2/3) ... [2020-10-20 06:19:15,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c517e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:15, skipping insertion in model container [2020-10-20 06:19:15,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:15" (3/3) ... [2020-10-20 06:19:15,121 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2020-10-20 06:19:15,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:19:15,142 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2020-10-20 06:19:15,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2020-10-20 06:19:15,178 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:19:15,179 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:19:15,179 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:19:15,179 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:19:15,180 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:19:15,180 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:19:15,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:19:15,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:19:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-10-20 06:19:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:19:15,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:15,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:15,233 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1422426996, now seen corresponding path program 1 times [2020-10-20 06:19:15,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:15,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420093213] [2020-10-20 06:19:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:15,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:19:15,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:15,525 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:15,526 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:15,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:15,537 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:15,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:15,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:15,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420093213] [2020-10-20 06:19:15,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:15,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:19:15,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51246071] [2020-10-20 06:19:15,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:19:15,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:15,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:19:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:19:15,590 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 3 states. [2020-10-20 06:19:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:16,007 INFO L93 Difference]: Finished difference Result 167 states and 190 transitions. [2020-10-20 06:19:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:19:16,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-20 06:19:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:16,023 INFO L225 Difference]: With dead ends: 167 [2020-10-20 06:19:16,023 INFO L226 Difference]: Without dead ends: 163 [2020-10-20 06:19:16,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:19:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-20 06:19:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2020-10-20 06:19:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 06:19:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 183 transitions. [2020-10-20 06:19:16,097 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 183 transitions. Word has length 7 [2020-10-20 06:19:16,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:16,098 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 183 transitions. [2020-10-20 06:19:16,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:19:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 183 transitions. [2020-10-20 06:19:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:19:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:16,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:16,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:19:16,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:16,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1422426995, now seen corresponding path program 1 times [2020-10-20 06:19:16,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:16,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360236498] [2020-10-20 06:19:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:16,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:19:16,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:16,454 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:16,455 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:16,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:16,462 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:16,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:16,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:16,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360236498] [2020-10-20 06:19:16,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:16,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 06:19:16,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506956404] [2020-10-20 06:19:16,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:19:16,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:16,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:19:16,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:19:16,523 INFO L87 Difference]: Start difference. First operand 159 states and 183 transitions. Second operand 4 states. [2020-10-20 06:19:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:16,966 INFO L93 Difference]: Finished difference Result 152 states and 174 transitions. [2020-10-20 06:19:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:19:16,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:19:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:16,970 INFO L225 Difference]: With dead ends: 152 [2020-10-20 06:19:16,970 INFO L226 Difference]: Without dead ends: 152 [2020-10-20 06:19:16,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:19:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-20 06:19:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2020-10-20 06:19:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-20 06:19:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2020-10-20 06:19:16,983 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 7 [2020-10-20 06:19:16,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:16,984 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2020-10-20 06:19:16,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:19:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2020-10-20 06:19:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:19:16,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:16,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:17,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:19:17,207 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:17,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1197727423, now seen corresponding path program 1 times [2020-10-20 06:19:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:17,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916025933] [2020-10-20 06:19:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:17,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:19:17,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:17,394 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:17,395 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:17,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:17,403 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:17,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:17,451 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:17,452 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-20 06:19:17,454 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:17,488 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-20 06:19:17,490 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:17,490 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-10-20 06:19:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:17,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:17,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916025933] [2020-10-20 06:19:17,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:17,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:19:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249913289] [2020-10-20 06:19:17,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:19:17,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:17,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:19:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:19:17,529 INFO L87 Difference]: Start difference. First operand 148 states and 171 transitions. Second operand 4 states. [2020-10-20 06:19:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:17,963 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2020-10-20 06:19:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:19:17,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 06:19:17,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:17,965 INFO L225 Difference]: With dead ends: 156 [2020-10-20 06:19:17,965 INFO L226 Difference]: Without dead ends: 156 [2020-10-20 06:19:17,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-20 06:19:17,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 149. [2020-10-20 06:19:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-20 06:19:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-10-20 06:19:17,977 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 12 [2020-10-20 06:19:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:17,977 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-10-20 06:19:17,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:19:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-10-20 06:19:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:19:17,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:17,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:18,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:19:18,195 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1197727424, now seen corresponding path program 1 times [2020-10-20 06:19:18,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:18,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612536781] [2020-10-20 06:19:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:18,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:19:18,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:18,353 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:18,353 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:18,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:18,368 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:18,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:18,428 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:18,429 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-10-20 06:19:18,431 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:18,462 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:19:18,464 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:18,464 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:14 [2020-10-20 06:19:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:18,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:18,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612536781] [2020-10-20 06:19:18,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:18,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-10-20 06:19:18,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2428315] [2020-10-20 06:19:18,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:19:18,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:18,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:19:18,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:19:18,717 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 7 states. [2020-10-20 06:19:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:20,025 INFO L93 Difference]: Finished difference Result 230 states and 269 transitions. [2020-10-20 06:19:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:19:20,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-20 06:19:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:20,028 INFO L225 Difference]: With dead ends: 230 [2020-10-20 06:19:20,029 INFO L226 Difference]: Without dead ends: 230 [2020-10-20 06:19:20,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:19:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-20 06:19:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 149. [2020-10-20 06:19:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-20 06:19:20,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-10-20 06:19:20,040 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 12 [2020-10-20 06:19:20,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:20,040 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-10-20 06:19:20,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:19:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-10-20 06:19:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:19:20,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:20,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:20,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:19:20,249 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:20,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:20,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1089504388, now seen corresponding path program 1 times [2020-10-20 06:19:20,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:20,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885324975] [2020-10-20 06:19:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:20,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:19:20,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:20,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:20,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885324975] [2020-10-20 06:19:20,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:20,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:19:20,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552387168] [2020-10-20 06:19:20,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:19:20,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:20,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:19:20,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:19:20,380 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 3 states. [2020-10-20 06:19:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:20,465 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2020-10-20 06:19:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:19:20,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-20 06:19:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:20,471 INFO L225 Difference]: With dead ends: 144 [2020-10-20 06:19:20,471 INFO L226 Difference]: Without dead ends: 144 [2020-10-20 06:19:20,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:19:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-20 06:19:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-20 06:19:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-20 06:19:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 165 transitions. [2020-10-20 06:19:20,480 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 165 transitions. Word has length 15 [2020-10-20 06:19:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:20,481 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 165 transitions. [2020-10-20 06:19:20,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:19:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 165 transitions. [2020-10-20 06:19:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:19:20,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:20,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:20,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:19:20,703 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:20,704 INFO L82 PathProgramCache]: Analyzing trace with hash -35180990, now seen corresponding path program 1 times [2020-10-20 06:19:20,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:20,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909905548] [2020-10-20 06:19:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:19:20,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:20,845 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:20,845 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:20,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:20,849 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:20,849 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:20,868 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:20,869 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:20,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:20,878 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:20,878 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-20 06:19:20,900 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:19:20,901 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:20,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:20,905 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:20,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 06:19:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:20,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:20,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909905548] [2020-10-20 06:19:20,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:20,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:19:20,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879134775] [2020-10-20 06:19:20,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:19:20,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:20,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:19:20,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:20,931 INFO L87 Difference]: Start difference. First operand 144 states and 165 transitions. Second operand 5 states. [2020-10-20 06:19:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:21,573 INFO L93 Difference]: Finished difference Result 229 states and 265 transitions. [2020-10-20 06:19:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:19:21,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 06:19:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:21,577 INFO L225 Difference]: With dead ends: 229 [2020-10-20 06:19:21,577 INFO L226 Difference]: Without dead ends: 229 [2020-10-20 06:19:21,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:19:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-20 06:19:21,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 143. [2020-10-20 06:19:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-20 06:19:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 164 transitions. [2020-10-20 06:19:21,586 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 164 transitions. Word has length 14 [2020-10-20 06:19:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:21,586 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 164 transitions. [2020-10-20 06:19:21,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:19:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 164 transitions. [2020-10-20 06:19:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:19:21,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:21,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:21,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:19:21,792 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash -35180989, now seen corresponding path program 1 times [2020-10-20 06:19:21,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:21,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298359996] [2020-10-20 06:19:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:21,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:19:21,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:21,918 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:21,918 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:21,922 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:21,923 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:21,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:19:21,947 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:21,947 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:21,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:21,964 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:21,965 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:21,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:21,975 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:21,975 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-10-20 06:19:22,017 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-20 06:19:22,019 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:22,028 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:22,036 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:19:22,037 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:22,044 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:22,045 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:22,045 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:9 [2020-10-20 06:19:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:22,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:22,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298359996] [2020-10-20 06:19:22,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:22,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-20 06:19:22,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39057500] [2020-10-20 06:19:22,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:19:22,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:22,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:19:22,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:19:22,231 INFO L87 Difference]: Start difference. First operand 143 states and 164 transitions. Second operand 8 states. [2020-10-20 06:19:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:23,877 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2020-10-20 06:19:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:19:23,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 06:19:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:23,879 INFO L225 Difference]: With dead ends: 241 [2020-10-20 06:19:23,880 INFO L226 Difference]: Without dead ends: 241 [2020-10-20 06:19:23,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:19:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-20 06:19:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 142. [2020-10-20 06:19:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-20 06:19:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-10-20 06:19:23,888 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 14 [2020-10-20 06:19:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:23,889 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-10-20 06:19:23,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:19:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-10-20 06:19:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:19:23,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:23,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:24,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:19:24,100 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1045514628, now seen corresponding path program 1 times [2020-10-20 06:19:24,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:24,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317055151] [2020-10-20 06:19:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:24,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:19:24,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:24,264 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:24,265 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:24,267 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,267 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:24,307 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:24,307 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-20 06:19:24,309 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,329 INFO L625 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2020-10-20 06:19:24,329 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,329 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:15 [2020-10-20 06:19:24,366 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:24,367 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,379 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:24,380 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:25 [2020-10-20 06:19:24,479 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:24,480 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 57 [2020-10-20 06:19:24,488 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-20 06:19:24,489 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 06:19:24,490 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:24,505 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:24,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-10-20 06:19:24,605 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:24,606 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2020-10-20 06:19:24,608 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:24,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:24,616 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:24,616 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:15 [2020-10-20 06:19:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:24,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:19:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:28,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317055151] [2020-10-20 06:19:28,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:28,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-10-20 06:19:28,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196097159] [2020-10-20 06:19:28,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:19:28,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:19:28,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:19:28,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2020-10-20 06:19:28,738 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand 14 states. [2020-10-20 06:19:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:30,525 INFO L93 Difference]: Finished difference Result 232 states and 265 transitions. [2020-10-20 06:19:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:19:30,525 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-10-20 06:19:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:30,528 INFO L225 Difference]: With dead ends: 232 [2020-10-20 06:19:30,528 INFO L226 Difference]: Without dead ends: 232 [2020-10-20 06:19:30,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=182, Invalid=417, Unknown=1, NotChecked=0, Total=600 [2020-10-20 06:19:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-20 06:19:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 141. [2020-10-20 06:19:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-20 06:19:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2020-10-20 06:19:30,535 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 18 [2020-10-20 06:19:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:30,535 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2020-10-20 06:19:30,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:19:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2020-10-20 06:19:30,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:19:30,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:30,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:30,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:19:30,740 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ENSURES_VIOLATIONMEMORY_LEAK, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:19:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:30,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1045514629, now seen corresponding path program 1 times [2020-10-20 06:19:30,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:19:30,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454169914] [2020-10-20 06:19:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-20 06:19:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:30,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:19:30,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:30,881 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:30,882 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,884 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:30,885 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,885 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:30,900 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_108|], 1=[|v_#valid_117|]} [2020-10-20 06:19:30,903 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:30,903 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:30,920 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:30,920 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 06:19:30,921 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,927 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:30,927 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,927 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-20 06:19:30,962 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:30,962 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,978 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:30,983 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:30,983 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:30,996 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:30,996 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2020-10-20 06:19:31,088 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,088 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 70 [2020-10-20 06:19:31,091 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-10-20 06:19:31,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 06:19:31,092 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,114 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,122 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-20 06:19:31,122 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,143 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:31,143 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:67, output treesize:51 [2020-10-20 06:19:31,213 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-10-20 06:19:31,214 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,229 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,243 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,244 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2020-10-20 06:19:31,245 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,258 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454169914] [2020-10-20 06:19:31,260 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:19:31,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1331061849] [2020-10-20 06:19:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:19:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:31,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:19:31,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:31,556 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:31,556 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,559 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,559 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:31,568 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_109|], 1=[|v_#valid_119|]} [2020-10-20 06:19:31,571 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:31,572 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,581 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,591 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,591 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 06:19:31,592 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,600 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,600 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-20 06:19:31,613 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:31,613 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,645 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:31,645 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,658 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,659 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2020-10-20 06:19:31,700 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,700 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 70 [2020-10-20 06:19:31,703 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-10-20 06:19:31,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 06:19:31,704 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,737 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-20 06:19:31,738 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,764 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:31,764 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:67, output treesize:51 [2020-10-20 06:19:31,785 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-10-20 06:19:31,786 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,804 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,819 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,820 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2020-10-20 06:19:31,821 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:19:31,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558436031] [2020-10-20 06:19:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:19:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:31,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:19:31,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:19:31,950 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:31,951 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,953 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,953 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:19:31,958 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_110|], 1=[|v_#valid_121|]} [2020-10-20 06:19:31,963 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:19:31,963 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,984 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,984 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 06:19:31,985 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:31,993 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:31,993 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-20 06:19:32,015 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:32,015 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:32,030 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,034 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:19:32,034 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:32,045 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,046 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:19:32,046 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2020-10-20 06:19:32,059 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2020-10-20 06:19:32,059 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:32,084 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,119 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,119 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 66 [2020-10-20 06:19:32,122 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-10-20 06:19:32,122 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-20 06:19:32,123 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:32,139 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,140 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:19:32,140 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:67, output treesize:51 [2020-10-20 06:19:32,163 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-10-20 06:19:32,164 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:32,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,200 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,201 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2020-10-20 06:19:32,202 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:19:32,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:19:32,212 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:19:32,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:32,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 06:19:32,212 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 06:19:32,212 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:19:32,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:19:32,839 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 06:19:32,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:19:32 BoogieIcfgContainer [2020-10-20 06:19:32,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:19:32,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:19:32,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:19:32,841 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:19:32,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:15" (3/4) ... [2020-10-20 06:19:32,846 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:19:32,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:19:32,848 INFO L168 Benchmark]: Toolchain (without parser) took 19792.65 ms. Allocated memory was 34.1 MB in the beginning and 76.0 MB in the end (delta: 41.9 MB). Free memory was 9.5 MB in the beginning and 11.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 39.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:32,849 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:19:32,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.64 ms. Allocated memory was 34.1 MB in the beginning and 44.0 MB in the end (delta: 10.0 MB). Free memory was 8.6 MB in the beginning and 15.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:32,850 INFO L168 Benchmark]: Boogie Preprocessor took 88.23 ms. Allocated memory is still 44.0 MB. Free memory was 15.1 MB in the beginning and 11.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:32,854 INFO L168 Benchmark]: RCFGBuilder took 1233.14 ms. Allocated memory was 44.0 MB in the beginning and 48.2 MB in the end (delta: 4.2 MB). Free memory was 11.2 MB in the beginning and 15.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:32,855 INFO L168 Benchmark]: TraceAbstraction took 17726.54 ms. Allocated memory was 48.2 MB in the beginning and 76.0 MB in the end (delta: 27.8 MB). Free memory was 15.5 MB in the beginning and 11.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:32,855 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 76.0 MB. Free memory is still 11.6 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:19:32,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 727.64 ms. Allocated memory was 34.1 MB in the beginning and 44.0 MB in the end (delta: 10.0 MB). Free memory was 8.6 MB in the beginning and 15.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 88.23 ms. Allocated memory is still 44.0 MB. Free memory was 15.1 MB in the beginning and 11.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1233.14 ms. Allocated memory was 44.0 MB in the beginning and 48.2 MB in the end (delta: 4.2 MB). Free memory was 11.2 MB in the beginning and 15.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 17726.54 ms. Allocated memory was 48.2 MB in the beginning and 76.0 MB in the end (delta: 27.8 MB). Free memory was 15.5 MB in the beginning and 11.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. * Witness Printer took 6.17 ms. Allocated memory is still 76.0 MB. Free memory is still 11.6 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1001] SLL* item = head; [L1002] int status = 0; [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 193 locations, 63 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 17.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1126 SDtfs, 1882 SDslu, 1897 SDs, 0 SdLazy, 2115 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 372 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 182 ConstructedInterpolants, 10 QuantifiedInterpolants, 11282 SizeOfPredicates, 40 NumberOfNonLiveVariables, 713 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...